Locomotive engine



May 14, 19H29.

' J. E. wml-n Fr-:LDl

* LocoMoTIvE ENGINE Filed June 26, 1925 Sil Patented May 14, 1929.

Jenn E. Mui-Irrsinn, or soARsDALn, NEW Yoan.

LOCOMO'IIIIVE ENGINE.

` Application led June 26, '1925. Serial No. 39,675.

and unusual integral construction of the midf dle or cent-ral cylinder,the side frames and the boiler cylinder saddle.

ln one practical embodiment of the invention, l provide in the form of asingle integralcasting, the two front side frames and the middle orcentral cylinder with its valve chest and the boiler cylinder saddleextending above the engine cylinder. Provision is inadeon said sideframes for the connection of the side cylinders therewith preferably inline with the central or middle cylindertransverscly of the structurewhereby 'said central cylinder and its integral connection with the sideframes rigidly reinforces and strengthens the side frames against themechanical stresses induced by the weight of the side cyl inders andtheir valve chests.

ldiththe above and other objects in view, the invention consists in theimproved locomotive engine structure and in the form, construction andrelative arrangement of the several parts as will. be hereinafter morefully described, illustrated in the accompanying drawings, andsubsequently incorporated in the subi oined claims.

ln the drawing, wherein I have illustrated one simple and satisfactoryembodiment of the invention. and in which similar reference charactersdesignate corresponding parts throughout the several views,-

lligure 1 is a vertical transverse section taken substantially on theline 1-1 of Fig. 2, and

Fig` 2 is a vertical longitudinal section taken on the line 2m?, of Fig.l..

Referring in detail to the illustrated ein bodiment of the invention,the two parallel side frames 5 which have heretofore been separatelyformed or cast, a're in the present instance cast as a single integralstructure, said side frames intermediate of their ends separate sidecylinders each having a vertically extending substantially rectangularportion 6. These intermediate portions of the side frame members areintegrally connected with the central or middle engine cylinder 7 bymeans of the transverse wall or web 8 and below said cylinder and alsobetween the side frames 5 the cylinder valve chest 9 is integrallyformed with thewall 8. However, while I have herein shown the valvechest as being arranged below the engine cylinder, it will be understoodthat this valve chest may, if desired, be positioned. above the saidcylinder. The integral connecting wall 8 is extended above the cylinder'and is formed with a onepiece saddle 10 in which the front end of theboiler cylinder 1l is seated. and securely bolted thereto in the usualmanner. 1 i

Each of the side frames 5 is also` formed with a forwardly projectingbumpercarry ing extension 12 and with a part 18 projecti ng rearwardlyof the middle cylinder These rearward extensions 13 of the side 'framesare integrally connected at their upper edges by the horizontallypositioned transversely disposed wall or web lll- To each of these rearextensions 13 of the side frames one `of the longitudinal main framemembers 15 of the locomotive structure is bolted or otherwise rigidlyfir-red atits forward end.

lt -is possible to also cast the side cylinders and their valve chestsintegral with the side frame members 5, but l preferably employ 16 eachhaving a valve chest and provide each cylinder and valve chest castingon one side thereof with suitable flanges lS whereby said. castings maybe mounted upon the outer sides of the intermediate rectangular portion6 of the respective side frames and rigidly fixed thereto by the boltsindicated as 19 or any other convenient fastening `means which willpermit of the easy and quick removal of the side cylinders whennecessary without disturbing p the relative arrangement of the sideframes 5 or the middle cylinder 7 and boiler saddle 10.

ln a prior application for patent, Fierialv lilo. 723,098, filed June30. 1924-, now ljatent lila 1,630,901, dated May 31, 1927, l havedescribed and claimed a locomotive iframe structure wherein the sideframes including the forward bumper extension and the rear? wardlyprojecting parts to he bolted to the main frames together with theboiler cylintween the central cylinder and the side frames, thusprovides an ample reinforce` ment, securely strengthening and bracingthe side vframes lat the point of connection of the two side cylinders16 therewith so that the sideframes are to a large extent, relieved ofthe severe mechanical strains or stresses which vwould otherwise-beinduced therein owing yto the great weight of the side cylinder andvalve chest castings. However, in this respect it will be understoodthat mypresent invention is not to be necessarily confined to the`specific `disclosure herein contained and that said central cylindermight be otherwise locatedbetween the sider trames'eitlier torwardlyorrearwardly or" the two side cylinders.V .I have not herein shown thesteam supply-and exhaust connections for the several engine cylinders7since this is a. matter of sound engineering judgment and constitutes noessential part of my present improvements.

It lwill be apparent to those who are familiar Ywith modern'locomotivedesign that by means of my present invention the ordinary two cylinderlocomotive may be readily converted into one of the three cylinder typeby merely,substitutingthe front frame casting consisting of two sideframes integrally connected by the central cylinder for the ordinaryfront frame and boiler cylinder saddle as heretofore provided.

' It-fwill be understood that the form of the twosideframes and the sidecylinder castings as herein illustrated is merely suggestive, and thatthese parts may be produced in various forms, shapes and dimensions asmay be deemed most desirable in accordance with the particular type oflocomotive which is equipped with my present invention. It is therefore,to be understood that I reserve the privilege of resort-ing to all suchlegitimate changes in the form, construction and relative arrangement ofthe several parts as may be fairly embodied within the spirit, and scopeof the invention as claimed.

I claim:

l. In a locomotive engine of the three cylinder type, an integralstructure comprising a middle cylinder, side frame members extendingforwardly and rearwardly therefrom on opposite sides thereof, and aboiler seat saddle extending vertically above the middle cylinder; andside cylinders detachably secured upon the outer sides of said sideframe members in transverse alignment with said middle cylinder.

2. In a locomotive engine, a one piece integral st-ructure consisting ofside frame members integrally connected intermediate of their ends by atransversely extending vertically positioned web and an engine cylinderand valve chest integrally formed with said web.

3. In a locomotive engine, a one piece integral structure consisting ofside frame mem- -bers integrally connected intermediate .of

their ends by a transversely extending vertically positioned web and anengine cylinder and valve chest integrally formed with said web, and aboiler seat saddle integrally formed with the upper end of said webabove said cylinder.

In testimony that I claim the foregoing as my invention, I have signedmy name hereto.

JOHN E. MUHLFELD.

